Replace the 20 year old water heater. It's past its life span. They now make more energy effecient water heaters which will lower your utility bill. Put a blanket around the new water heater while you're at it.
A light period is a menstrual cycle that is shorter and/or lighter than a woman's regular period. Women should familiarize themselves with their menstrual cycle, how many pads or tampons they use, and how long their periods last to quickly detect any changes in their periods.
Period light first: When you are experiencing the first few days of your period (or sometimes your last), you can have slower rate of bleeding. This can often be seen as just brown blood or lighter bleeding, as opposed to the bright red you're used to. This is common, and nothing to worry about. Best wishes.